Salt mixture for explosives.



UNITED STATES JEAN V. SKOGLUND, OF BAYONNE, NEW JERSEY.

SALT MIXTURE FOR EXPLOSIVES.

SPECIFICATION forming part of Letters Patent No. 673,328, dated April30, 1901.

Application filed September 26, 1900. Serial No. 31,156. (No specimens.)

To all whon't it may concern:

Be it-known that I, JEAN V. SKOGLUND, a subject of the King of Swedenand Norway, and a resident of Bayonne, county of'Hudson and State of NewJersey, have invented certain new and useful Improvements in ExplosiveSalt Mixtures, of which the following is a the sodium sulfate is thusremoved, owing.

to the incomplete double decomposition. The crystals are separated andthe mother-liquor contains salts of nitrates of ammonium and sodium andsulfates of ammonium and sodiu m. An oxid or a salt, preferably anitrate, the base of which forms an insoluble or very little solublesulfate, is now added to this m otherliquor. Asulfate is precipitated,and the clear solution consists of more or less pure nitrates ofammonium and sodium. The precipitate is separated from the clearsolution, from which the water is removed either by evaporation orallowing the salts to crystallize. Some of the bases or oxids that forminsoluble or diflicultly-soluble sulfates are, for instance, oxids ofbarium and calcium.

When an oxid is used instead of a nitrate,

a sulfate will be thrown down and ammonia will be liberated, which iseasily removed from'the solution when the water is evaporated.

The practical manner to manufacture this salt mixture is the following:About equivalent weights of commercial nitrate of sodium and ammoniumsulfate are dissolved in water and the solutions are well mixed.Suspended insoluble particles are allowed to settle and the clearsupernatant solution is cooled and caused to crystallize. The moredilute the solution is the purerthe crystals are, which consist ofGlaubers salt-,and consequently the loss of the more expensive salts isless. The clear solution (the mother-liquor) is drawn off from thecrystals. The crystals are a by product and may be used for any purpose.Now I add a solution of, for instance, nitrate of calcium equivalent tothe amount of sulfates in the liquor; but I may add a smaller quantitywhen not all of the sulfuric acid is precipitated. The precipitateisallowed to settle and the clear supernatant liquid is evaporated todryness. The precipitated sulfate is a by-product and may be used forany purpose. The residual salt mixture is dried and ground and is nowready for any purposes it may be used for.

Instead of evaporating all waterI may crystallize the mother-liquor, andthus obtain a salt mixture with a higher percentage of ammonium nitrate.

What I claim as my invention is- The method of manufacturing a saltmixture, consisting in first dissolving sodium nitrate and ammoniumsulfate in water, then causing it to crystallize, then separating thecrystals from the mother-liquid, then adding a compound able toprecipitate sulfuric acid as a sulfate, then separating the precipitatedsulfate, and then removing the water from the mother-liquor,substantially as described.

Signed at New York city, New York, this 20th day of July, 1900.

JEAN v. SKOGLUND.

Witnesses:

O. SEDGWIOK, J. M. HOWARD.

